Examples collected by @PierreSelim - a good start: https://commons.wikimedia.org/wiki/User:PierreSelim/Structured_data

Here's a great example of extensively, personally, customized, organized templates for images with high re-use value on high-traffic pages:

https://commons.wikimedia.org/wiki/User:Evan-Amos

His big problem with MMV was how it did not use or display any of his custom work.

Take at least one file for each type of document, and also when we need legal information about the subject:

• pictures: JPEG, TIFF, etc.
  • Picture from contributor with potentially copyrighted element: https://commons.wikimedia.org/wiki/File:Baudelaire,_Biblioth%C3%A8que_de_la_Pl%C3%A9iade,_%C5%92uvres_compl%C3%A8tes,_volume_I,_dos_et_jaquette.jpg https://commons.wikimedia.org/wiki/File:Nascita,_sculpture_de_Sibylle_Pasche,_cimeti%C3%A8re_des_Rois,_Gen%C3%A8ve.jpg
  • Picture from outisde of Commons: https://commons.wikimedia.org/wiki/File:En_attendant_Godot,_Festival_d%27Avignon,_1978_f22.jpg
  • Picture from outisde of Commons with potentially copyrighted element: https://commons.wikimedia.org/wiki/File:Le_Jardin_de_N%C3%A9bamoun.jpg
  • Derivative work from a video: https://commons.wikimedia.org/wiki/File:Annie_Th%C3%A9baud-Mony,_lors_de_l%27inauguration_de_la_st%C3%A8le_devant_l%27OMS,_Gen%C3%A8ve.jpg
• video: WEBM
  • Old movie: https://commons.wikimedia.org/wiki/File:Bahen_(1941)_1080p.webm
  • Modern video from Youtube: https://commons.wikimedia.org/wiki/File:Kalinka_-_Russian_folk_dance.webm
• sound
  • https://commons.wikimedia.org/wiki/File:Rajagopal_speech_in_Lidk%C3%B6ping,_Sweden_(audio_only).ogg
• text documents: PDF, DJVU
  • PDF under a free license by a Commons contributor: https://commons.wikimedia.org/wiki/File:Le_syst%C3%A8me_d%27exploitation_GNU-Linux-fr.pdf
  • PDF in the public domain: https://commons.wikimedia.org/wiki/File:Arthur_Stanley_Eddington_-_The_theory_of_relativity_and_its_influence_on_scientific_thought_(1922).pdf
  • DJVU: https://commons.wikimedia.org/wiki/File:Mozart_Sonate_(manuscript).djvu
• graphics: PNG, SVG
  • Simple logo: https://commons.wikimedia.org/wiki/File:444_album_cover.png
  • Graphic by a Commons contributor: https://commons.wikimedia.org/wiki/File:Subduction-en.svg

Awesome! Thank you very much and keep them coming. I will compile them on the info pages on Commons as soon as I get to it.

It's great to see this project finally gaining some momentum!

I'd like to add https://commons.wikimedia.org/wiki/File:Biological_and_technological_scales_compared-en.svg as an example of a work pieced together from several source images from different authors and with different licenses (not all free licenses are compatible with each other, compare e.g. Commons:Collages)

Also, don't forget the new stuff in the Data: namespace (random picks, there might be better examples):

• map data
  • points: (zoom in to Australia) https://commons.wikimedia.org/wiki/Data:Canberra_light_rail_-_City_to_Woden_(indicative_stops_-_May_2017).map
  • lines: https://commons.wikimedia.org/wiki/Data:IsraelHighways/3.map
  • polygons: https://commons.wikimedia.org/wiki/Data:Naturalearthdata.com/admin-0-countries-no-antarctica.map
• tabular data: https://commons.wikimedia.org/wiki/Data:Emoji.tab

These are still pretty new and we haven't figured out how to handle them on a daily basis at all, but they sure as heck need better meta data (they don't even support categories right now, compare e.g. T153995). Might turn out to be difficult due to how these things are stored, please get in contact with the people from Commons-Datasets.

Some thing to keep in mind for the possibly not too distant future:

• There are plans to enable uploading of 3D-files on Commons: Village Pump discussion, Examples on beta: Example 1 (3D view), Example 2 (3D view)
• There are plans to enable mp3 upload as well (but that should be pretty similar to how we handle ogg vorbis files)

An example of 'interesting' subcategorization:

The image https://commons.wikimedia.org/wiki/File:Prohibition_Party_ballot_access_(2016).svg is in a deep subcategory of the Category:People on Wikimedia Commons.

1. Category:People
2. Category:Bill Bayes
3. Category:Prohibition Party 2016 presidential campaign
4. File:Prohibition Party ballot access (2016).svg

@EBernhardson told me about Obama's dog yesterday. The file https://commons.wikimedia.org/wiki/File:Obama_family_dog_in_the_Rose_Garden_(cropped).jpg is part of this category tree:

Category:Bo (dog)
Category:Obama family
Category:First Families of the United States
Category:Presidents of the United States
Category:Executive branch of the United States government
Category:Executive branches of government
Category:Public law
Category:Subfields of political science
Category:Political science
Category:Social sciences
Category:Scientific disciplines
Category:Science
Category:Academia
Category:Knowledge
Category:Concepts
Category:Topics
Category:CommonsRoot

That little dog took a long journey through some strange territory.

In T173979#3604348, @Abit wrote:

@EBernhardson told me about Obama's dog yesterday. The file https://commons.wikimedia.org/wiki/File:Obama_family_dog_in_the_Rose_Garden_(cropped).jpg is part of this category tree:

It gets better.

Category: Bo (dog)
Category: Obama family
Category: African American families
Category: African Americans
Category: People of Black African descent in the Americas

Bo the dog is African American person too, as well as being a President of the United States.

Here's a file with muliple "formerly attributed to" values. https://commons.wikimedia.org/wiki/File:Attributed_to_Gregorius_de_Coninck_001.jpg

How to deal with sourcing data about files (and not just the files themselves)? Via references, like on Wikidata? Example file here (from @Nikkimaria) https://commons.wikimedia.org/wiki/File:Ninoxboobook.png

A reminder that this is still on November's board, so it could either be pushed further or closed based on what's left to do. Thank you!

Page on wiki is ready! https://commons.wikimedia.org/wiki/Commons:Structured_data/Get_involved/Feedback_requests/Interesting_Commons_files

To be mentioned in T179328: Structured Commons newsletter - Nov-Dec 2017 edition.